GMU 11, Davtron Temp sensor, and LHR

[65MooneyPilot]

I am going to install these units in my plane, but I am wondering how they normally run the wires. Do they go thru the wheel well out to the wing or do they somehow route them down the leading edge past the aileron and then back to the middle of the wing. I have read previous posts about the GMU11 but no specifics on the routing of the wires. Thanks

[PT20J]

Mine follow the existing Mooney wire bundle ahead of the main spar. 

[65MooneyPilot]

So is your GMU 11 out at the wing tip or just after the skin split as I have see on other posts? The real question is how did they get there hands in there to secure the wires. I guess my arms are to big. I only have one Nav light wire going out to the right wing tip. I don’t think the hole will take any more wires.

[OR75]

2 hours ago, 65MooneyPilot said:

So is your GMU 11 out at the wing tip or just after the skin split as I have see on other posts? The real question is how did they get there hands in there to secure the wires. I guess my arms are to big. I only have one Nav light wire going out to the right wing tip. I don’t think the hole will take any more wires.

you should be able to pull wire along the same nav light wire . the holes usually that the wires go through should have grommets to avoid chaffing.

Safety wire is your best friend when it comes to finding / fishing / pulling electric wires along the leading edge. Along with some patience.    

[PT20J]

Electrician’s fish tape may work. Someone mentioned using 3’ lengths of threaded rod and some couplings from the hardware store.

[AnAngryGoose]

Fish tape can work, also a long coat hanger, like the ones that have a coating on them. You can straighten those to get it started but fish tape or safety wire with a pull wire may work best. 

Be sure to leave a pull wire there for next time.

Also take care to use all stainless steel or brass hardware on the GMU and be sure it's not too close to your strobe to disrupt your readings. 

[65MooneyPilot]

Ok, thanks for the info, I guess I will have to find a small arm to go into the wing panel to secure the wire. No worries about the strobe because I don’t have one on the wingtip.  Roger on the hardware. 

[JimB]

When changing to LED strobes, the RH wing isn't too bad. I disconnected the nav light wiring, attached new wires those and pulled them back into the fuselage. The LH side however is a whole other story! Some triple jointed skinny guy with 4 foot long arms went thru and tied the wire bundle with lacing every 6-12 inches to the pitot tubing and the stall switch wiring. The LH side involves a LOT of bad language

[ArtVandelay]

Or just mount the GMU in the tail, where I think they usually are.

[65MooneyPilot]

Another question, when you install the second G5 are they installing the pitot static lines on the bottom HSI or do they leave them capped off. I have looked all over the install manual and cannot find the answer. Thanks

[EricJ]

1 hour ago, 65MooneyPilot said:

Another question, when you install the second G5 are they installing the pitot static lines on the bottom HSI or do they leave them capped off. I have looked all over the install manual and cannot find the answer. Thanks

Yes, the pitot and static lines get connected to the second G5.    It can revert to (or even just switch between) AI and HSI mode.    On mine if the AI loses power the HSI automatically reverts to an AI.    I think the AHRS needs the air inputs for alignment, anyway.